Closure-operating device



Nov. 9 1926.

H. c. FISCHER CLOSURE OPERATING DEVICE Filed April 14, 1922 avg-.1.

ATTORNEY WITNESS:

Patented Nov. 9, 1926.

HENRY C. FISCHER, OF MANNING, IOWA.

CLOSURE-OPERATING DEVICE.

Application filed April 14, 1922. Serial No. 552,548.

This invention relates to improvements in roof doors, the general objectof the invention being to provide means for opening and closing thedoors from the floor.

This invention also consists in certain other features of constructionand in the combination and arrangement of the several parts, to behereinafter fully described, illustrated in the accompanying drawingsand specifically pointed out in the appended claim.

In describing my invention in detail, reference will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several views, and in which Figure 1is a fragmentary sectional view showingthe invention in use.

Figure 2 is a viewsimilar to Figure 1 showing the door 3 partly opened.

Figure 3 is a similar view showingthe position occupied by the door whenthe latter is fully opened.

In these views 1 indicates a portion of the roof of a building which isprovided with openings 2, closed by the hinged doors 8. My inventionrelates to the opening and closing of such doors by a person standing onthe floor and such means consists of a bracket of substantially V-shapeand having one limb longer than the other, said limbs being bolted orotherwise fastened to the under face of the door, as shown at 5. An eye6 is formed at the junction of the limbs and a rope or cable 7 has oneend secured to this eye. This cable passes through a pulley 8 arrangedadjacent the edge of the opening which is nearest the unhinged edge ofthe door and then this cable passes downwardly to a point where it maybe reached by a person standing on the floor of the building. The shortlimb of the bracket is arranged adjacent the hinged edge of the door,and it will be seen that when the rope or cable is pulled upon theclosed door will be swung upwardly beyond a vertical position and willthus drop upon the roof. \Vhenthe door is to be closed the rope ispulled upon again to swing the door upwardly and then the door will dropinto closed position. Thus thedoor can be easily and quickly opened andclosed by a person on the floor.

It is thought from the foregoing description that the advantages andnovel features of my invention will be readily apparent. j

I desire it to be understood that I may make changes in the constructionand in the combination and arrangement of the several parts, providedthat such changes fall within the scope of the appended claim.

lVhat I claim is The combination with an overhead pivot ed trap doornormally arranged horizontally, of a substantially V-shaped bracketterminally secured to said door and depending therefrom, said bracketincluding one straight leg, and a relatively long inclined leg, an eyemember projecting from the apex of said bracket, a cable having one endse-' cured to said eye, and a guide pulley ar- 70 ranged above said eyeand over which the cable is trained, whereby the door can be opened andclosed by pulling on the free end of said cable. 1

In testimony whereof I affix my signature.

HENRY C. FISCHER.

